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euroautophile
Join Date: Feb 2008
Location: Chicago, IL
Posts: 115
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Best procedure to remove S4 MAF?
I'm hoping to find out what the best way is to remove the MAF sensor on my '87 S4?
Thanks!
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SOLD! 1988 S4 Black/Tan SOLD! 1987 S4 Red/Black WANTED! Early, low miles '87 or GT White on Tan 5spd LSD... |
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10-27-2008, 11:16 AM
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Registered
Join Date: Oct 2008
Posts: 2
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It's very simple. The MAF is held on to the rubber throat on the throttle body by a single jubilee clip.
To access MAF first remove air filter box by taking off intake tubes then undoing the 4 10mm nuts and the jubilee clip securing hose to air divertor valve. You can loosen the clip either with a long screwdriver aimed through the intake 'legs', or using a 7mm wrench. If you use a wrench it's advisable to tie a long piece of string to it and tie round wrist as you could drop it into vee of the intake! Once clip is loosened by a turn or so you can pull out the MAF. It's still attached by the 6-way plug going to LH ECU so remove this and the MAF is free. |
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10-27-2008, 11:42 AM
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euroautophile
Join Date: Feb 2008
Location: Chicago, IL
Posts: 115
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excellent, thanks for the advice! It looked as though the clip was the only thing holding it in place but I didn't want to gamble and get myself into a 'situation'.
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SOLD! 1988 S4 Black/Tan SOLD! 1987 S4 Red/Black WANTED! Early, low miles '87 or GT White on Tan 5spd LSD... |
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10-27-2008, 01:31 PM
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Registered
Join Date: Oct 2007
Posts: 24
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Once air box is removed, Remove Passenger side fuel rail cover. You'll need a foot long Common (flat) screwdriver. You can unscrew the clamp. Only Unscrew enough to loosen the MAF. If you loosen it too much the clamp will slip and you'll have a difficult time reinstalling. Because you'll have to reach in too hold it to tighten again.
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10-27-2008, 05:22 PM
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Registered
Join Date: Jan 2007
Location: Cambridge, England
Posts: 53
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Even when you have lossened the clip (only needs a couple of turns) you may find the MAf won't release from the rubber elbow. This is because with the heat in there it can stick to the rubber. A wiggle and a twist can release it.
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10-30-2008, 08:52 AM
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Registered
Join Date: Aug 2006
Location: Cincinnati, Ohio
Posts: 1,019
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You may have to lean over the engine to get to the bottom boot clamp...it's a bit of a bugger. If the boot is dry and brittle it should be replaced...they are only about $50.00.
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Kuhn Performance Technologies, LLC Big Gun: 1988 928S4 Twin Turbo, 5-SPD/LSD 572 RWHP, 579 RW ft-lbs, 12 psig manifold pressure. Stock Internals, 93 octane. Little Gun: 1981 928 Competition Package Twin Turbo, 375 RWHP, 415 RW ft-lbs, 10psig manifold pressure. Nikasil Block, JE2618 Pistons, 93 octane. |
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10-30-2008, 05:35 PM
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